diff --git a/CHANGELOG.md b/CHANGELOG.md
index b78d8f98..3ea7031d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+### [v1.6.16-stable](https://github.com/SonarSonic/DrawingBotV3/releases/tag/v1.6.16-stable-free)
+- Added: 'Area Calibration' PFM, used for checking the size of the plotters drawing area and adjusting margins
+- Fixed: CMYK / Colour Match / Masking settings not saving / loading properly when saved in a project
+- Fixed: Older projects not reloading properly in some situations
+- Fixed: Viewport zoom resetting when a task is stopped, or when a task is completed
+- Fixed: HPGL plotters not being detected with "Detect Plotter" when the serial port echoes the input
+- Improved: Allow multi-threading when running tasks with Batch Processing
+
 ### [v1.6.15-stable](https://github.com/SonarSonic/DrawingBotV3/releases/tag/v1.6.15-stable-free)
 - Fixed: Preset creation/editing dialogs appearing blank on macOS
 - Fixed: Prevent the Drawing Pen selection closing when a check-box is ticked.
diff --git a/gradle.properties b/gradle.properties
index 1f6c6f09..b68eccf5 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,6 +1,6 @@
 #app version
 app_name=DrawingBotV3-Free
-app_version=1.6.15
+app_version=1.6.16
 app_state=stable
 
 javaFX_version=17.0.10
diff --git a/src/main/java/drawingbot/SoftwareDBV3Free.java b/src/main/java/drawingbot/SoftwareDBV3Free.java
index e3244983..b217040c 100644
--- a/src/main/java/drawingbot/SoftwareDBV3Free.java
+++ b/src/main/java/drawingbot/SoftwareDBV3Free.java
@@ -23,7 +23,7 @@ public class SoftwareDBV3Free implements ISoftware {
 
     public static final String displayName = "DrawingBotV3 Free";
     public static final String shortName = "DBV3";
-    public static final String rawVersion = "1.6.15";
+    public static final String rawVersion = "1.6.16";
     public static final String releaseType = "Stable";
     public static final String displayVersion = rawVersion + " " + releaseType;
 
diff --git a/src/main/java/drawingbot/plugins/PremiumPluginDummy.java b/src/main/java/drawingbot/plugins/PremiumPluginDummy.java
index 83fa15e9..5d7e380c 100644
--- a/src/main/java/drawingbot/plugins/PremiumPluginDummy.java
+++ b/src/main/java/drawingbot/plugins/PremiumPluginDummy.java
@@ -90,6 +90,9 @@ public void registerPFMS() {
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Sketch Flow Field", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Sketch Superformula", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Sketch Sweeping Curves", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
+        MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Streamlines Edge Field", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
+        MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Streamlines Flow Field", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
+        MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Streamlines Superformula", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "ECS Drawing", Register.PFM_TYPE_SPECIAL, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Spiral Circular Scribbles", Register.PFM_TYPE_SKETCH, DummyPFM::new).setPremium(true);
 
@@ -137,6 +140,7 @@ public void registerPFMS() {
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Layers PFM", Register.PFM_TYPE_SPECIAL, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "SVG Converter", Register.PFM_TYPE_SPECIAL, DummyPFM::new).setPremium(true);
         MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Pen Calibration", Register.PFM_TYPE_SPECIAL, DummyPFM::new).setPremium(true);
+        MasterRegistry.INSTANCE.registerPFM(DummyPFM.class, "Area Calibration", Register.PFM_TYPE_SPECIAL, DummyPFM::new).setPremium(true);
     }
 
     public Object[] disableBatchProcessingUI(Object... objects) {